This box is designed for the extra long ctgs. in a Rem. M-700 Action.
It is the center feed design, and allows for an O.A.L. of approx. 4.000".
The receiver, bolt stop, and ejection port, must be altered to use this box.
The box is normally sold with an F-10 follower.
Outside length is 4.070". Inside length is 3.990".